The name you mentioned is very similar to Wacatac (or Watacat ), a common family of trojans that Windows Defender often flags. These trojans are known for: Stealing passwords and banking info. Setting up Remote Access (RATs) to control your PC.

While there isn't a single famous "Watsica.rar" paper, researchers frequently use archives like this to deliver "Wacatac" trojans by exploiting known WinRAR vulnerabilities.

Forensically Analyzing ZIP & Compressed Files | by Josh Lemon

If you are analyzing this file yourself (safely in a sandbox), forensic experts recommend:

Attackers often use CVE-2025-8088 or CVE-2023-38831 to bypass normal extraction boundaries. This allows them to write a malicious script directly into your Windows Startup folder while showing you a "clean" decoy file.